Door control mechanism



Aug. 16, 1932.

s. P. WIEGNER DOOR CONTROL MECHANISM Original Filed Dec. 1, 1926 3 Sheets-Sheet !1.|.lll|I|||I. H lillllll-llllllllll INVENTOR. SIMON P. W/EG-NER.

A TTORNEY;

Aug. 16, 1932. s. P. WIE GNER 1,872,201

DOOR CONTROL MECHANISM Original Filed Dec. 1, 1926 3 Sheets-Sheet 2 SIMON F. W/EGNER A TTORNE Y.

Aug. 16, 1932. s, wlEGNER 1,872,201

DOOR CONTROL MECHANISM Original Filed Dec 1, 1926 a Sheets-Sheet s E'TQE FF LEI 76 INVENTOR.

SIMON F. W/EGNER ATTORNEY.

Patented Aug. 16, 1932 UNITED STATES smonnwmennn. or LOS nncnnnscatmnma I DooncoN'rRoL m'ncmrsn I Application filed December 1,1926. Serial No; 151,591.; Renewed January 22,1982.

This invention relates to door control mechanism.

The general objectof the'invention is to provide an improved door opening and 010s ing device. f

A specific object of my invention is to provide an improved mechanism for controlling the movement of a door wherein fluid under pressure is employed, and wherein a novel type of fluid pressure control is provided.

A further object of my invention is'to provide a novel means for stopping the movement of a fluid controlled-door.

Another object of the invention is to provide automatic adjustable cushioning means for stopping a moving door.

A further ob 'ect of my inventio'n isto provide improved means for synchronously actuating an elevator shaft door and a door mounted on the elevator. f

Another object of the invention istoprovide a plural cylinder door control mecha:

nism with means to regulate the flow of fluid to each cylinder independently of the other cylinder. 7 Y .y I z A further object of the invention is to provide a door control devicehaving fluid c s. trolled mechanism operable without stuffing boxes or one-way valves.

Other objects and advantages thisin vention will be apparentfrom the following description taken in connection withthe accompanying drawings wherein:

a elevator looking toward the door and: shows my improved door operating mechanism...

Fig. 2 is a section taken on line .--22 of.

Fig. 1.

crating devices, one for actuating the floor door and one for actuating the elevator door;

Fig. 4 is an enlargedside elevation of the 1 doors are fully opened.

Fig. 1 is a vertical section of a part ofan Fig. 3 is a view similar toFig. 1 showingthe manner of installing two of my door opdoor actuating mechanism shown in Fig. 1.

5. with partsqbroken away to more clearly illustrate the same. i

Fig. 8 is a section of line 8-8 of Fig. 5. U Fig. 9 is a vertical section of one of the control valves taken on line 9-9 of Fig. 6.

Fig.10 is afplan section of .a control valve taken on line 1010 of Fig. 9.

the device 7 taken on f Fig.11is a. top plan view of a control valve with the cap androtor memberiremoved to morefclearly sho the passages inthe body member.

1 Fig. 12 is a diagrammatictop plan view corresponding to Fig. 6 showing the-relative position ofthe valve partswhen the doors are beingclosed. I

Fig. 13 isa similar, view'showing the valve parts in their respective positions when the doors areclosedlf .7

Fi 14 is also a view similar to Fig. 12 showing the relative positions of the valve parts when thedoors arebeing. opened, and

Fig. 15is a similar view showing the relativepositions of the valve parts when the 7 "Referringnow to the drawingsfI have indicated my device generally at 10 as mounted on a wall 11 of an elevator shaft and connect-v ed bymeans of a rod 12 to a door actuating lever 13 which is pivo'ted at one endto the so 'wall lland at the other end to anelevator door lzi. The actuating mechanism for my device "may be of any approved type. In Fig. 1 I show a very simple'fconstruction which consists of an arm 15 pivoted to the wall 11 at 15 andconnected at its other end tor 20. Attached to the arm 15 and anchored to the wall 11 I provide a coiled spring 15" which is adapted to normally resiliently hold the arm 15' in its initial position and to bring f5. common exhaust pipe 42. The exhaust pipe 32 (see Fig. 7 The piston 32 may beiof any desired construction, and the details thereof as well as the details of the manner ini'which the front of the cylinder is bled form no part of my present invention. Secured to-the pis ton rod 31 show a block 33having a downwardly extending arm apertured as at 34 for pivotal engagement with the door actuating lever 13 and having on its top surface a valve. actuating cam 35' which'c'onsists of two adjustable arms '36 and 37. i 1

Secured to a top member 38 0f the frame 27 I show pressure or cylinder control valves 39 and 40 having a common inlet pipe 41 and a 4' 42 is provided with a T for communication are with a pipe 43 which leads to an exhaust line (not shown). The inlet pipe 41 is also provided with a T,for communication with a pipe 44 from the pressure tank (not shown) and on either side of the inlet T I provide shutoff valves 45 for controlling the pressure to either of the valves39 or 40. communica tion is afforded between each of the valves 39. and 40 and the far end of the cylinders 25 and 26 by means of pipes, 46, each of which is provided intermediate its length with a T48 which may have one-of its openings'closed by a screw plug 49.' ThisT'48 is for testingv and lubricating purposes, since to test the de vice it isonly necessary to remove the plug 49 and replace it with. a pressure gauge.

i The valves 39 and 40 are exactly similar in construction, and each comprises (see Fig.

9') a body portion 50 having on its under surface a screw threaded stem 51 which extends through an aperture 52in the top plate 38 of the frame 27, and is adapted to be clamped to the plate 38 by a nut 53. The top of the body 50, is provlded with a boss. 54 having its outer periphery threaded for thereceptionof'a cap member 55. On the top surface 56 of the boss 54 andwithin a recess 57 of the cap I 'sliow'a rotor member 58 adapted to be' rotated by a shaft 59 which extends through a bore 60 in the body'50 and into a cylin For imparting rotation froni'the shaft'59 to the rotor 58 I provide a pin 62 on theshaft 59. Thispin extends into an aperture 63 of thGrlfOtOI member 56. The body 50 is provided with, a threaded bore 64 see-Fig.' l1)- for engagement with the inlet pipe 41. and a threaded bore 65 for the reception-ofthe exhaust pipe On the side opposite from the ri'cal recess 61 of the rotor member 58.

ing upwardly from the bore 65 to the surface 561 andl also provide a bore 71 smaller than the bore 70, extending through the top surface 56- and having communication with the bore 65. The passage of fluid from the bore 71 into the bore 65 is regulated by an adjustable needle valve 72. In the under side of the rotor member 58 I provide an aperture 73 of a length sufiicient to embrace the bores 68 and 69 or the bores 70 and 69.

' To rotate each shaft 59 I provide an arm adjacent itslower end. The shafts 59 each have another arm 7 6 adjustably secured thereto. The arm 75 has a pin 77 thereon which fits in a slot 78 in a bar 79- to allow the arm 75 to move independently of the bar 79 at times, also the bar 79 is adjustable as to length by means of a screw threaded stud 80 and lock nuts 81. The arms 75 have coil springs 82 attached thereto tonormally retain the pins 77 against the outer extremities r."

of the slots 78. Upon a movement of the bar 79 the arms 75 will 'be moved thereby and rotate the shafts 59 to cause one of the valves 39 to assume an intake position and the other to assume an exhaust position.

For imparting movement to the bar 7 91 provide an arm83 connected to the bar 79 by a link 84. The link 84 engages the arm 83 and the bar 79 by ball and socket connections as at 85 and is adjustable as to length by a threaded stud 86 and lock nuts 87. The arm 83' is actuated by a rod 16 from the pivoted arm 15 mounted on the elevatorshaft wall.

' Assuming the pressure by which the ele vator door actuating means 10 is operated to be air, as is generally thecase, and referring to F ig. 12 of the drawings which is a diagrammatic view, it will be seen that the bar 79 has been moved to cause the arms 75 to turn the shaft 59 and the members 58 so that the valve 39 is in an exhaust position and the valve 40'is in an intake position. When the valves are in these positions the members 58 are turned so that in the valve 39 the recess 73 forms a communicating passage from the bore 69 to the bores 70 and 71, and in the valve 40 the recess 73 forms a communicating passage between the bores 69 and 68.

. When the valve 40 is in this position the air pressure will pass from the supply pipe 41 into bore 64 through the bore 68 and into the recess 73 of member 58 and thence through bore 69 into bore 66 to the pipe 46 and to the cylinder 26, to thereby, cause the pistonrod 3l to move. At the same time the pressure is coming through bore 68it'also comes through the bore 67 and at all timesinto therecess 57 of the cap 55. As the area ofthe'top surface of the'rotor member 58 is-greatenthan the area ofthe recess 7 3. there will begmore' pressurev on the top of the member 58 thanithere is on the under side ofthesame andthus the rotor member will be kept seated on the" top surface 56 oftheboss 54. 1-}

When the valve 39 is in the position shown inFi 12, the exhaust air from cylinder will pass through theipipe 46 into- ,bore,;66 through the bore 69 and intothe recess73 of the rotor 58, and thence through the bores 70 and 71 into the bore 65 andthrough the pipe -42 to the pipe 43 and thence to theexhaust line (not shown). if 1 When the valves are-in the position as just described and as shown in Fig. 12, the piston rod starts its travel from the cylinder26 toward the cylinder25 and :carries with it the block 33,and the cam tracks 35. and-'asthe cam track 37 approaches'the cylinder 25 it forces the arm 76 of valve 39inwardly thereby rotating the shaft 59 which causes the rotor member 58 to assume the position shown in Fig. 13. When in-this position the recess 73 forms a communicating passage from the bore 69 only to the bore 71. v-lleretofore the exhaust has beenfree so that the piston rapid 1y movesthe door, but in this new position allthe air being exhaustedmust pass by the needle valve 72 before entering the bore-65 and pipe 42.

In this way the air from cylinder 25 is not allowed a free passage and consequentlythe.

speed of the piston rod is slowed down. This slowing, down of the piston rod damps the movement and prevents a slammingof the door at the end of its travel. In this manner a cushioning effect is obtained. The. amount of this'c-ushioning effect is readily adjustable by means of the needle valve 72 and the arms 36 and V l j 1 In Fig. 14 I have diagrammatically illustrated the valve mechanism as in a reverse position from that shown in Fig. 12, that is the bar 7 9 has been moved to cause the valve 39 to assume an intake position and the valve 40 to assume a full exhaust position. In Fig. 15 the valve 39 is still in an intake position while the valve 40 has been caused by the cam track 36 of the cam member to assume an intermediate or partial exhaust position to produce a cushioning effect.

From the foregoing description it will be apparent that when the operator moves the lever 22 to the right the bar 17 will be moved upward and to the right and will cause the pivoted arm 15 to swing to the right. As the arm 15 swings to the right it pulls the rod 16 and thereby imparts movement to the arm 83 of the door actuating means 10. The arm 83 by its linked connection to the arms 7 5 of 1 the valves 39 and causes the valve 39 to Fig.1'14.2When= the valves-are in this position the piston rod' 31 and the block 33 are forcedto the right, and asthe door operating lever-13 is attached to the block 33 bythe rod :12'it will be moved to the right to cause the door-14to open. The door will open rap idly until the :bore 7 Dis closed when awn. slow-down due to the smaller exhaust. Whenthe operator moves the lever 22 back to the position shown in Fig. 1 the bar 17 will be retracted and the pivoted: arm 15 will be forced by a spring 15'to assume its normal position and thereupon cause actuation of the valves 39 and 40, so that the valve 40 will assume an intake position and the valve 39 to assume :an exhaust position. When the valves are in this relationthe piston rod'31 and theblock 33 will be forced to theleft andcause the arm 13 by means of rod 12 to close :the door 14.

. In Fig. 31 have shown one of my devices 10 as mounted on the elevatorshaftwall11,the sameas inFigJl, for operating the elevator shaft door '14,'and another of my devices 10 as mounted withinthe elevator 20 for actuating-a doorof the elevator. I also show a lever arrangement for operating both of the door actuating devices 10 simultaneously; The valve actuating means for the device 10Which is located within the elevator 20' "consists of providing the standard 19 with an arm 91 on which a lever 92 is pivoted at 92. This lever 92 is on the oppposite its attached at its other end to the valve actuating'a'rm 83 01: the device 10.

Itwill be seen that as the bar 17 is operated to-cause'the pivoted arm 15 to swing to the right as previously described, the arm 15 will cause the' lever 92 to move tothe right and it will.- through the medium of the arm 93, rod 45, bell crank 96, and 'rod 97, cause the valveactuating arm 83 through its linked engagement. with the valves 39 and 40 to set the y alve 40in' an exhaust position, and the valve 39 in an intake position, and thus cause the piston rod 31 and the block 33 to move tot-he right, And as the block 33 is connected by means of a rod 98 to a pivoted elevator door, actuating lever .99the elevator door 90 willbe-opened... a 1

l'l hemethod of operating the valve actuating arm' 83 imay. be varied to suit various conditions and forms no pertinent part of this What I claim is: i Y r :1. In a device of the class described, a sup port, a pair of cylinders secured to saidsupport, piston means in said cylinders, a common'piston rod for both of said pistons, a separate valve for each of said cylinders for controlling the intake and exhaust to the respective cylinders, said valves being mounted on said support, said valves each having a common intake pipe and a common exhaust pipe, said valves being arranged to assume full inlet, full exhaust, and partial exhaust positions, shutoff valves on said intake pipe independently controlling the pressure to each of said cylinder valves, means for actuating the said cylinder valves, said means including a pair of arms secured to the valve stem of each valve, a bar, one of said arms of each valve stem being slidably connected to said bar, an arm pivoted to Said bar, an arm on said support, said last mentioned arm being movable to control the said valves, means on said piston rod' for intermittently engaging each of said other arms on said valve stem for causingsaid cylinder pistons to move from full exhaust position to restricted exhaust position.

2. In'a device of the class described, a frame, a pair of cylinders secured to said frame, piston means in said cylinder, a common piston rod for both of said pistons, a separate valve for each of said cylinders for controlling the intake and exhaust to the respective cylinders, said valves being mounted on said frame, said valves each having a common intake pipe and a common exhaust pipe, said valves being arranged to'assume full inlet, full exhaust and partial exhaust positions, shutofl' valves on said intake pipe inde-- pendently controlling the pressure to each of said cylinder valves, means for actuating the, said cylinder valves, said means including a pair of arms secured to the valve stem of each valve, a bar, an arm pivoted to said bar, an arm on said frame, said last mentioned arm being movable'to control the said valves, means on said piston rod for intermittently engaging each of said other arms on said valve stem for causing said cylinder pistons to move from full exhaust position to restricted exhaust position, said means consisting of two cam rails adapted to be mounted on a movable block, means to adjust each of said cam rails independent of the other, and means in said cylinder valves for adjusting the area of said restricted exhaust.

3. In a device of the'class described, a pair of cylinders, piston means in said cylinders, a common piston rod for both of said pistons, a separate valve for each of said cylinders for controlling the intake and exhaust to the respective cylinders, said valves each having a common intake pipe and a common exhaust, said valves being arranged to assume full inlet, full exhaust, and partial exhaust positions, means for actuating the said valves, said means including a pair of arms secured to the valve stem of each valve, a bar, one of said arms of each valve stem being slidably connected to said bar, an arm pivoted to said bar, another arm, said last mentioned arm being movable to control the said valves, means on said piston rod for intermittently engaging each of said other arms on saidstem for causing said cylinder valves to move from full exhaust position to restricted exhaust position.

45. In a door operating mechanism, a cylinder, a piston in'said cylinder, a rod on said piston, a single pipe for transmitting fluid to and from said cylinder, rotatable means controlling fiow through said pipe to first cause unrestricted flow of fluid to said cylinder, said rotatable means serving to thereafter cause unrestricted flow of fluid from said cylinder, said means serving to later cause restricted fiow of fluid from said cylinder, an arm for controlling said rotatable means, a cam track on said piston rod, said cam track being adapted to engage and operate said arm, and means to vary the effective length of said cam track in the direction of the travel of said piston.

In testimony whereof, I hereunto afiix my signature.

SIMON P. WIEGNER. 

